1. Children are more likely to learn language during the critical period.
儿童在关键期内更容易学习语言。
2. The critical period is very important for language acquisition.
关键期对语言习得非常重要。
3. Humans learn language most effectively during the critical period.
人类在关键期内学习语言最有效。
4. The critical period may end before the age of six.
关键期可能在六岁前结束。
5. After the critical period, learning language becomes more difficult.
关键期过后,学习语言会更加困难。